01974nam a2200253   450000500170000000800410001703500150005810000190007324500530009226000520014530000110019749000270020850001560023550200580039152009550044965000130140465000240141770000360144170000370147770000460151471000360156081000590159685600650165520260818084516.0301098s1984    th      r    0000|00eng d  a.b101559581 aHsu, Chen-lung10aComputer aided design for large sewerage systems  aBangkok :bAsian Institute of Technology,c1984  a109 p.1 aThesis ;vno. EV-84-12  aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Environment, Resources and Development  aThesis (M.Eng.) - Asian Institute of Technology, 1984  aThis study tests the AlT model developed earlier at AIT on  the large sewerage systems and proposes modification found  necessary during testing. Th e decomposed branches and the reduction of states are developed to solve the problem of the large computer storage requirement for the large sewerage system design and these are illustrated by three successful examples.  The modified AIT program considers the partial flow  situation to make the AlT model more accurate. This new approach satisfies the velocity constraints in both flow conditions.  Hence , it opens the door for the combined sewer system design  where two flow situations are to be considered.   Modified AIT   program shows better optimal  design  abilities in both cost and   CPU time compared to Discrete Differential Dynamic Programming (DDDP) Approach and the conventional sewer system design.  In case of large sewerage systems, modified AIT pro gram  shows its effectiveness.  0aSewerage 0aDynamic programming1 aOrth, Hermann M., eChairperson1 aI, Fude, IeExamination Committee1 aLohani, Bindu N., eExamination Committee2 aR.O.C., eExamination Committee2 aAsian Institute of Technology.tThesis ;vno. EV-84-12  3Full-Textuhttp://203.159.5.9/ait-thesis/detail.php?q=B20589